题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232701-62627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232701-61104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232701-42818.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232701-21110.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232702-77153.png)
A.![]() | B.![]() | C. 1 | D.2 |
答案
解析
试题分析:根据题意可知双曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232701-62627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232701-61104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232702-92670.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232703-86616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232702-77153.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232702-50240.png)
点评:主要是考查了双曲线的几何性质的运用,以及四边形的面积的求解,属于中档题。
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232656-56635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232657-26690.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232643-14831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232643-70911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232643-86396.png)
(Ⅰ)求抛物线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232643-34330.png)
(Ⅱ)过抛物线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232643-34330.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232644-17561.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232644-71701.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232644-12132.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232644-26221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232645-23124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232645-91451.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232644-12132.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232644-26221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232645-88119.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232645-76366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232646-36197.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232635-72450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232636-87622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232636-26661.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232636-70929.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232636-99774.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232637-84214.png)
(I)已知在极坐标(与直角坐标系
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232635-72450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232637-42037.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232637-59727.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232637-62004.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232638-96821.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232637-62004.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232636-87622.png)
(II)设点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232638-33124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232636-70929.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232636-87622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232619-92395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232619-44335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232619-98656.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232619-92395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232619-18870.png)
(Ⅰ)求曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232619-18870.png)
(Ⅱ)若点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232620-77081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232620-50495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232620-58337.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232620-33737.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232620-41177.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232620-60835.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232609-73718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232609-95908.png)
(1)求曲线C的普通方程;
(2)设点Q是曲线C上的一个动点,求它到直线L的距离的最小值.
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